New Camp Nou (Nou camp nou?), Berlin Olympiastadion (despite its history), and those British stadiums that are basically piecemeal agglomerations of grandstands are my favorites. Also, the Colosseum was technically built as a stadium, so that too is one of my favorites.

Not that familiar with a lot of stadiums in Europe but I couldn't resist commenting. The Allianz Stadium is without a doubt the best - I went to Munich a few years ago and I remember the first time seeing it all lit up at night. Such an incredible sight! Im trying to find my pictures of it on my external harddrive as it was light up red and blue when I saw it and it looked spectacular! When I went we stayed in an apartment at the very top of this building - nightmare for my legs but the view of the city skyline at night was breathtaking. Nymphenburg Palace was very beautiful as well. Nothing on the Allianz Stadium though!

#1 wembley stadium UK, the home of football.
#2 twikenham stadium UK, the home of rugby.
#3 Wimbledon stadium UK, the home of tennis.
#4 lords stadium UK, the home of cricket.
It's great to watch sports in the stadiums and country that created them, and as Britain created most world sports and has many of the greatest stadiums, I think I am justified in having a UK centric list

I was going to include the open UK, the home of golf, but the stands are different to a conventional stadium, but the atmosphere is amazing, another great sport Britain gave to the world